Hydraulic concrete pile cutter
CA 1291024 C · Owner: Trudeau, Leon B. · Inventors: Trudeau, Leon B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a hydraulic guillotine including a blade and a method of cutting reinforced concrete piles at grade. The blade is a metal plate having a beveled cutting edge extending across most of one edge bordered by unbeveled side portions, adapted to slide in channels. The blade may be demountable from a pusher plate which enables the blade to be changed. The hydraulic guillotine comprises a rear plate adapted to hold one or two hydraulic cylinders to actuate the pusher plate. Two hydraulic cylinders are preferred, because they have less tendency to jam the blade, during use. An anvil or stop extends across the outer ends of the channels and is, preferably removable. The rear …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.